🔓 Digispark Unlock Project

A project to demonstrate PIN brute-forcing using the Digispark ATtiny85 microcontroller.

📌 Overview

The Digispark Unlock Project showcases how the Digispark ATtiny85 microcontroller can be used to automate PIN brute-forcing on a mobile device’s lock screen. This project is purely for educational purposes to understand the interaction between hardware and digital systems.

⚠️ Disclaimer: Use this project only on devices you own or have explicit permission to test. Unauthorized access to a device is illegal.

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🚀 Features

✅ Brute-Force PIN Combination: Attempts PINs from 0000 to 9999 automatically.
✅ Configurable Delays: Adjust delay timings to avoid security lockouts.
✅ Compact & Efficient: Uses low-power Digispark ATtiny85 microcontroller.
✅ Easy Programming: Arduino-compatible with DigiKeyboard Library.
✅ USB-Based Execution: No need for additional hardware.

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🔧 Hardware Requirements

• Microcontroller: Digispark ATtiny85
• Connections:
  • Micro USB Cable – For programming and power supply
  • Target Mobile Device – For testing PIN brute-force automation

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💻 Software Requirements

• Arduino IDE (for writing and uploading the script)
• DigiKeyboard Library (to simulate keyboard inputs)

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📝 Installation & Setup

Step 1: Install Required Software

1. Download and install Arduino IDE from Arduino Official Site.
2. Add Digistump Board Support in Arduino IDE:
   • Go to File > Preferences.
   • Add this URL in Additional Board Manager URLs: http://digistump.com/package_digistump_index.json.
   • Open Boards Manager, search for Digistump AVR Boards, and install it.

Step 2: Install DigiKeyboard Library

1. Open Arduino IDE.
2. Go to Sketch > Include Library > Manage Libraries.
3. Search for DigiKeyboard and install it.

Step 3: Upload the Code

1. Connect your Digispark ATtiny85 via USB.
2. Open Arduino IDE and paste the following code:

#include "DigiKeyboard.h"

void setup() {}

void loop() {
  for (int pin = 0; pin <= 9999; pin++) {
    DigiKeyboard.sendKeyStroke(0);
    DigiKeyboard.print(String(pin));
    DigiKeyboard.sendKeyStroke(KEY_ENTER);
    delay(5000); // Adjust delay to avoid security lockout
  }
}

3. Click Upload (The Digispark must be disconnected before compilation and reconnected when prompted).

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⚙️ How It Works

1. The Digispark ATtiny85 acts as a USB keyboard.
2. It simulates keypresses, entering PIN numbers sequentially (0000 to 9999).
3. A 5-second delay is added to prevent security lockouts.
4. The process continues until the correct PIN is found.

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⚠️ Ethical Considerations

• 🚨 Use this tool responsibly on your own devices.
• 🔒 Unauthorized use is illegal in many countries.
• 🎓 Intended for learning about cybersecurity and hardware automation.

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📝 License

This project is licensed under the MIT License. You are free to modify and distribute it for educational purposes only.

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📩 Contribute & Support

If you have suggestions, feel free to submit a pull request! 🤝